The study is intended to touch the dust grain studies and the prevalence of respiratory symptoms of workers in factories, stores seeds and animal feed industries. During the period of work of the worker for a period of 6-8 hours a day how education is divided into two sections, the first section is the place to store the sample at the sample store tools with the air PAS-6 version and then analyzed to find the quantity of microorganisms and in the second part is a study of the long-term changes of the prevalence of respiratory system. Using a medical surveillance program.
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